The Acoustic Energy AE100 Mk2 ranks #21 out of 28 total Medium Size Bookshelf Speakers for sound quality. See Top Recommended Speakers By Attribute for all the top speaker suggestions.
#21 Acoustic Energy AE100 Mk2: $500 Amazon
Pros: Good directivity linearity - on-axis and off-axis response track each other well despite an otherwise uneven overall response, which means the tonal problems can be EQ’d out with reasonably good success. Wide horizontal radiation, about ±50°. Nicely finished cabinet - the reviewer specifically called out the fit and finish as a genuine positive. Both units of the review pair measured closely matched to each other.
Cons: High-frequency level runs noticeably too hot regardless of placement - the reviewer tried four different setups (near/far from wall, on-axis, 30° off-axis) at two listening distances and couldn’t get it to sound right at any of them. A mid-range dip that the reviewer attributes to internal cabinet resonance rather than intentional baffle-step compensation, reinforced by an internal inspection showing no cross-bracing and a slot port that may itself be resonating when tapped. Small tweeter waveguide magnet suggests limited power handling headroom. At this price and radiation pattern, the reviewer would pick the ELAC DBR62 (more neutral, similar ±60° pattern) or, for less money, the ELAC Debut 2.0 B6.2 over this speaker; the KEF Q150 and SVS Prime Bookshelf are also called out as more linear alternatives nearby in price.
How it compares: Just above it: JBL Stage 2 250B - $150 cheaper, 2Hz higher bass extension (-3dB). Just below it: Pioneer SP-BS22-LR (Philharmonic AAM Mod) - $332 cheaper, 1Hz lower bass extension (-3dB).
| Bass Extension (-10dB) | 42Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 63Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 2.9kHz |
| Dimensions | 11.4"H x 6.5"W x 9.8"D (290 x 165 x 250 mm) |
| Drivers | 5.25" midwoofer, 1" soft fabric dome tweeter with waveguide |
| Impedance | 6 ohms nominal, 4.7 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 84dB (measured average, Erin's Audio Corner) |
| Weight | 20 lbs each |
| Woofer Cabinet | ported, rear slot port |
As an eBay Partner, we may be compensated if you make a purchase.